1011993633503 has 2 divisors, whose sum is σ = 1011993633504. Its totient is φ = 1011993633502.

The previous prime is 1011993633479. The next prime is 1011993633593. The reversal of 1011993633503 is 3053363991101.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1011993633503 - 2²⁴ = 1011976856287 is a prime.

It is a super-2 number, since 2×1011993633503² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011993633593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505996816751 + 505996816752.

It is an arithmetic number, because the mean of its divisors is an integer number (505996816752).

Almost surely, 2^{1011993633503} is an apocalyptic number.

1011993633503 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011993633503 is an equidigital number, since it uses as much as digits as its factorization.

1011993633503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 196830, while the sum is 44.

The spelling of 1011993633503 in words is "one trillion, eleven billion, nine hundred ninety-three million, six hundred thirty-three thousand, five hundred three".